Trane CVHE Information Manual page 82

DIAGNOSTIC DESCRIPTION
Purge Cprsr Suction Temp
Sensor
Purge Liquid Level Too High
Purge: Loss of Comm with
Chiller
Purge: Loss of Comm with
Starter
Purge: Loss of Comm with
Stepper
Purge: Loss of Comm with
Options
Purge: Loss of Comm w/
Retrofit CLD
Purge: Loss of Comm with
Stepper #1
Purge: Loss of Comm with
Stepper #2
Purge Memory Error Type I:
NOVRAM
This diag. should be seen in
both UCP2 and retrofit
applications only.
Purge Memory Error Type II:
Shadow RAM
This diag. should be seen in
retrofit applications only.
Information Manual
Diag Module Diag.
Type that Active
Called Modes
Diag.
IFW Purge All
IFW Purge All
IFW Purge All
IFW Purge All
IFW Purge All
IFW Purge All
IFW Purge All
IFW Purge All
IFW Purge All
MMR Purge On Purge
Power Up
or
following
a Type II
Memory
error
diag.
IFW Purge All
CAUSE
Open or Shorted Sensor
a. IFW to the chiller, MMR to the Purge.
a. The Level Switch at the purge opened for 6 to
10 Seconds.
Note: This was implemented as tripping in 2 A/D
samples, which are 0.4 seconds apart. Prior to 2/
2/95 only 1 A/D sample could trigger this
diagnostic.
b. IFW to the chiller, MMR to the Purge.
The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
The purge module lost communications with the
starter module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
The purge module lost communications with the
stepper module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, IFW to the Purge.
The purge module lost communications with the
retrofit Human Interface module for 15
contiguous seconds.
The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
a. On either Purge Module power up or following
a Type II Memory Error, a NOVRAM memory
error was detected. The Purge Module is
operating on all Engineering Factory defaults for
all setup parameters. Check all setup
parameters and continue to run purge. Replace
the Purge Module as soon as a replacement is
available.
Note: It is expected that this diagnostic will be
detected on the very first power up of the Purge
Module at the Manufacturer since the NOVRAM
will not contain valid data on first power up.
a. A Shadow RAM memory error was detected.
The Purge Module is operating on all last valid
values (pulled from NOVRAM) for all setup
parameters. No setup parameter changes were
pending to be loaded into NOVRAM, a complete
recovery of all setup parameters was made and
there is no need to check unit setup parameters.
Purge pumpout times Compressor starts and
hour were lost for not more than the last 24
hours. This is expected to be an isolated event
and repair or replacement is not required. If this
diagnostic does occur repeatedly, then replace
the Purge module.
Diagnostics Menu
Help Message
Purge Inop: See
Purge O & M
Manual
Purge Inop: See
Purge O & M
Manual
Check IPC
Wiring/
Connections
Check IPC
Wiring/
Connections
Check IPC
Wiring/
Connections
Check IPC
Wiring/
Connections
Check IPC
Wiring/
Connections
Check IPC
Wiring/
Connections
Check IPC
Wiring/
Connections
Purge Inop: See
Purge O & M
Manual
No Setting Were
Lost
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